Atmospheric humic-like substances （HULIS） are not only an unresolved mixture of macro- organic compounds but also powerful chelating agents in atmospheric particulate matters （PMs）; impacting on both the propertie...Atmospheric humic-like substances （HULIS） are not only an unresolved mixture of macro- organic compounds but also powerful chelating agents in atmospheric particulate matters （PMs）; impacting on both the properties of aerosol particles and health effects by generating reactive oxygen spedes （ROS）. Currently, the interests of HULIS are intensively shifting to the investigations of HULIS-metal synergic effects and kinetics modeling studies, as well as the development of HULIS quantification, findings of possible HULIS sources and generation of ROS from HULIS. In light of HULIS studies, we comprehensively review the current knowledge of isolation and physicochemical characterization of HULIS from atmospheric samples as well as HULIS properties （hygroscopic, surface activity, and colloidal） and possible sources of HULIS. This review mainly highlights the generation of reactive oxygen species （ROS） from PMs, HULIS and transition metals, especially iron. This review also summarized the mechanism of iron-organic complexation and recent findings of OH formation from HULIS-metal complexes. This review will be helpful to carry out the modeling studies that concern with HULIS-transition metals and for further studies in the generation of ROS from HULIS-metal complexes,展开更多
Although VEGF-B was discovered as a VEGF-A homolog a long time ago,the angiogenic effect of VEGF-B remains poorly understood with limited and diverse findings from different groups.Notwithstanding,drugs that inhibit V...Although VEGF-B was discovered as a VEGF-A homolog a long time ago,the angiogenic effect of VEGF-B remains poorly understood with limited and diverse findings from different groups.Notwithstanding,drugs that inhibit VEGF-B together with other VEGF family members are being used to treat patients with various neovascular diseases.It is therefore critical to have a better understanding of the angiogenic effect of VEGF-B and the underlying mechanisms.Using comprehensive in vitro and in vivo methods and models,we reveal here for the first time an unexpected and surprising function of VEGF-B as an endogenous inhibitor of angiogenesis by inhibiting the FGF2/FGFR1 pathway when the latter is abundantly expressed.Mechanistically,we unveil that VEGF-B binds to FGFR1,induces FGFR1/VEGFR1 complex formation,and suppresses FGF2-induced Erk activation,and inhibits FGF2-driven angiogenesis and tumor growth.Our work uncovers a previously unrecognized novel function of VEGF-B in tethering the FGF2/FGFR1 pathway.Given the anti-angiogenic nature of VEGF-B under conditions of high FGF2/FGFR1 levels,caution is warranted when modulating VEGF-B activity to treat neovascular diseases.展开更多
OBJECTIVE:To evaluate the effectiveness and safety of Jinshuibao capsules(金水宝胶囊),a Traditional Chinese Medicine(TCM),in the treatment of residual cardiopulmonary symptoms in convalescent corona virus disease 2019...OBJECTIVE:To evaluate the effectiveness and safety of Jinshuibao capsules(金水宝胶囊),a Traditional Chinese Medicine(TCM),in the treatment of residual cardiopulmonary symptoms in convalescent corona virus disease 2019(COVID-19)patients.METHODS:A total of 200 participants with COVID-19 in convalescence phase were randomly assigned into two groups at a 1:1 ratio in this multicenter randomized,double-blind,placebo-controlled trial.One group received Jinshuibao capsules,and the other received placebo.The patients were followed up at one and two weeks of treatment.Five symptoms(dry cough,shortness of breath,sweating,chest tightness and palpitation)improvement rates and full recovery rates were compared.RESULTS:All baseline characteristics were comparable between the two groups.After two weeks of treatment,symptom improvement rates for dry cough(74.00%vs 50.00%,P=0.015),shortness of breath(78.95%vs 46.15%,P<0.001),sweating(80.00%vs 57.75%,P=0.004),chest tightness(87.06%vs 60.47%,P<0.001)and palpitation(82.50%vs 64.56%,P=0.010)were significantly higher in the Jinshuibao group compared with the control group.Meanwhile,Jinshuibao capsules treatment also displayed more satisfactory full recovery rates of all five symptoms(dry cough 58.00%vs 19.57%,shortness of breath 18.95%vs 7.69%,sweating 36.00%vs 19.72%,chest tightness 32.94%vs 13.95%,and palpitation 48.75%vs 29.11%)in participants with COVID-19 in convalescence phase compared with the control group(P<0.05).No severe adverse events were reported in either group.CONCLUSIONS:Jinshuibao capsules have the potential to improve residual cardiopulmonary symptoms in convalescent COVID-19 patients,with few adverse events.展开更多
[Objectives]To study the anti-inflammatory effect of Simiao Liangxue granule on the rats with acute gouty arthritis(AGA).[Methods]A total of 60 male SD rats were randomly divided into 6 groups with 10 rats in each gro...[Objectives]To study the anti-inflammatory effect of Simiao Liangxue granule on the rats with acute gouty arthritis(AGA).[Methods]A total of 60 male SD rats were randomly divided into 6 groups with 10 rats in each group.The rats in the colchicine group were intragastrically administered with 0.65 mg/kg colchicine,and the rats in low,medium and high dose groups of Simiao Liangxue granule were intragastrically administered with Simiao Liangxue granule with mass concentration of 0.4,0.8 and 1.6 g/kg,respectively.The rats in the normal control group and the model group were given the same amount of normal saline for 7 d,and the acute gouty arthritis model was prepared 1 h after administration on the 5th d.At the end of the experiment,the degree of joint swelling and joint inflammation index,the content of interleukin-1β,tumor necrosis factor-a and cyclooxygenase-2 in articular cartilage,and the content of interleukin-8,NO and UA in serum of rats were measured,and the histomorphological observation was performed.[Results]Compared with the normal control group,the joints of rats were swollen to different degrees,the inflammation score was significantly increased,and the content of IL-1β,TNF-αand COX-2 in the soft tissue of the joints was significantly increased in each group(P<0.05);compared with the model group,the joint swelling degree and inflammation score of rats in the colchicine group and Simiao Liangxue granule group were significantly decreased,the content of IL-1β,TNF-αand COX-2 in the joint soft tissue was also significantly decreased(P<0.05),and the indexes of each dose group of Simiao Liangxue granule were similar to those of the colchicine group;compared with the normal control group,the content of IL-8,NO and UA in the joint soft tissue of rats was significantly increased in each group(P<0.05);compared with the model group,the content of all indexes in joint soft tissue of rats in normal control group,colchicine group and Simiao Liangxue granule group were significantly decreased(P<0.05);the content展开更多
基金the Natural Science Foundation of China under NSFC Grant No. 21477073, 41273127 for support to conduct this research
文摘Atmospheric humic-like substances （HULIS） are not only an unresolved mixture of macro- organic compounds but also powerful chelating agents in atmospheric particulate matters （PMs）; impacting on both the properties of aerosol particles and health effects by generating reactive oxygen spedes （ROS）. Currently, the interests of HULIS are intensively shifting to the investigations of HULIS-metal synergic effects and kinetics modeling studies, as well as the development of HULIS quantification, findings of possible HULIS sources and generation of ROS from HULIS. In light of HULIS studies, we comprehensively review the current knowledge of isolation and physicochemical characterization of HULIS from atmospheric samples as well as HULIS properties （hygroscopic, surface activity, and colloidal） and possible sources of HULIS. This review mainly highlights the generation of reactive oxygen species （ROS） from PMs, HULIS and transition metals, especially iron. This review also summarized the mechanism of iron-organic complexation and recent findings of OH formation from HULIS-metal complexes. This review will be helpful to carry out the modeling studies that concern with HULIS-transition metals and for further studies in the generation of ROS from HULIS-metal complexes,
基金This study is supported by the State Key Laboratory of Ophthalmology,Zhongshan Ophthalmic Center,Sun Yat-sen University,and Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science,Guangzhou 510060,P.R.Chinathe National Natural Science Foundation of China(82150710555 and 82220108016 to X.Li,81970823 to Jin Yao and 81830013 to J.O.)+4 种基金a Key Research and Development Plan of Shandong Province(2016GSF201100)the Fundamental Research Funds for the Central Universities(19ykpy151)the long-term structural Methusalem funding by the Flemish Government,Belgiumthe Deutsche Forschungsge-meinschaft(Project No.:394046768-SFB1366)the DZHK partner site Mannheim/Heidelberg to H.F.L.,an ERA PerMed 2020 JTC grant“PROGRESS”.
文摘Although VEGF-B was discovered as a VEGF-A homolog a long time ago,the angiogenic effect of VEGF-B remains poorly understood with limited and diverse findings from different groups.Notwithstanding,drugs that inhibit VEGF-B together with other VEGF family members are being used to treat patients with various neovascular diseases.It is therefore critical to have a better understanding of the angiogenic effect of VEGF-B and the underlying mechanisms.Using comprehensive in vitro and in vivo methods and models,we reveal here for the first time an unexpected and surprising function of VEGF-B as an endogenous inhibitor of angiogenesis by inhibiting the FGF2/FGFR1 pathway when the latter is abundantly expressed.Mechanistically,we unveil that VEGF-B binds to FGFR1,induces FGFR1/VEGFR1 complex formation,and suppresses FGF2-induced Erk activation,and inhibits FGF2-driven angiogenesis and tumor growth.Our work uncovers a previously unrecognized novel function of VEGF-B in tethering the FGF2/FGFR1 pathway.Given the anti-angiogenic nature of VEGF-B under conditions of high FGF2/FGFR1 levels,caution is warranted when modulating VEGF-B activity to treat neovascular diseases.
基金Supported by National Administration of Traditional Chinese Medicine:a Randomized,Double Blinded,Controlled,Multicenter Clinical Trial to Improve the Symptoms of Pulmonary and Cardiac Function During the Convalescence of COVID-19(2020ZYLCYJ08-3)the State Administration of Traditional Chinese Medicine Special Project of Chinese Medicine Emergency Response to New Coronavirus Pneumonia(2020ZYLCYJ04-1)National Key R&D Program(2020YFC0845000)。
文摘OBJECTIVE:To evaluate the effectiveness and safety of Jinshuibao capsules(金水宝胶囊),a Traditional Chinese Medicine(TCM),in the treatment of residual cardiopulmonary symptoms in convalescent corona virus disease 2019(COVID-19)patients.METHODS:A total of 200 participants with COVID-19 in convalescence phase were randomly assigned into two groups at a 1:1 ratio in this multicenter randomized,double-blind,placebo-controlled trial.One group received Jinshuibao capsules,and the other received placebo.The patients were followed up at one and two weeks of treatment.Five symptoms(dry cough,shortness of breath,sweating,chest tightness and palpitation)improvement rates and full recovery rates were compared.RESULTS:All baseline characteristics were comparable between the two groups.After two weeks of treatment,symptom improvement rates for dry cough(74.00%vs 50.00%,P=0.015),shortness of breath(78.95%vs 46.15%,P<0.001),sweating(80.00%vs 57.75%,P=0.004),chest tightness(87.06%vs 60.47%,P<0.001)and palpitation(82.50%vs 64.56%,P=0.010)were significantly higher in the Jinshuibao group compared with the control group.Meanwhile,Jinshuibao capsules treatment also displayed more satisfactory full recovery rates of all five symptoms(dry cough 58.00%vs 19.57%,shortness of breath 18.95%vs 7.69%,sweating 36.00%vs 19.72%,chest tightness 32.94%vs 13.95%,and palpitation 48.75%vs 29.11%)in participants with COVID-19 in convalescence phase compared with the control group(P<0.05).No severe adverse events were reported in either group.CONCLUSIONS:Jinshuibao capsules have the potential to improve residual cardiopulmonary symptoms in convalescent COVID-19 patients,with few adverse events.
基金Guangxi Natural Science Foundation(2020GXNSFAA259059)National Training Program for Characteristic Technology Inheritance of Traditional Chinese Medicine(20184828005)In-hospital Preparation Development Project of the First Affiliated Hospital of Guangxi University of Chinese Medicine in 2017(2017ZJ001).
文摘[Objectives]To study the anti-inflammatory effect of Simiao Liangxue granule on the rats with acute gouty arthritis(AGA).[Methods]A total of 60 male SD rats were randomly divided into 6 groups with 10 rats in each group.The rats in the colchicine group were intragastrically administered with 0.65 mg/kg colchicine,and the rats in low,medium and high dose groups of Simiao Liangxue granule were intragastrically administered with Simiao Liangxue granule with mass concentration of 0.4,0.8 and 1.6 g/kg,respectively.The rats in the normal control group and the model group were given the same amount of normal saline for 7 d,and the acute gouty arthritis model was prepared 1 h after administration on the 5th d.At the end of the experiment,the degree of joint swelling and joint inflammation index,the content of interleukin-1β,tumor necrosis factor-a and cyclooxygenase-2 in articular cartilage,and the content of interleukin-8,NO and UA in serum of rats were measured,and the histomorphological observation was performed.[Results]Compared with the normal control group,the joints of rats were swollen to different degrees,the inflammation score was significantly increased,and the content of IL-1β,TNF-αand COX-2 in the soft tissue of the joints was significantly increased in each group(P<0.05);compared with the model group,the joint swelling degree and inflammation score of rats in the colchicine group and Simiao Liangxue granule group were significantly decreased,the content of IL-1β,TNF-αand COX-2 in the joint soft tissue was also significantly decreased(P<0.05),and the indexes of each dose group of Simiao Liangxue granule were similar to those of the colchicine group;compared with the normal control group,the content of IL-8,NO and UA in the joint soft tissue of rats was significantly increased in each group(P<0.05);compared with the model group,the content of all indexes in joint soft tissue of rats in normal control group,colchicine group and Simiao Liangxue granule group were significantly decreased(P<0.05);the content
